public class FacadeSystem {
    private SubSystemA subSystemA = new SubSystemA();
    private SubSystemB subSystemB = new SubSystemB();
    private SubSystemC subSystemC = new SubSystemC();

    public String sequentMethod(String message){
        return subSystemC.addString(subSystemB.getLength(subSystemA.upperChar(message)));
    }

    public String subSystemAandSubSystemCMethod(String message){
        return subSystemC.addString(subSystemA.upperChar(message));
    }

}
